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Country:
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USA 
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Province:
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Arkansas, Washington Co. 
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Locality:
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St.Paul, Durham, White River 
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| 
Layer:
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Fayetteville Shale, lower part | 
| 
Lower Boundary:
 | 
UAR basal--lower shale of Fayetteville, 327 million years
 
 | 
| 
Upper Boundary:
 | 
UAR lower shale--Wedington/Fayetteville, 326.4 million years
 
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Georeference:
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